Where does “phototachometry” come from?
phototachometry (English) comes from English photo, from English photography, from French photographie, from Ancient Greek φωτο-, from Ancient Greek φῶς, from Proto-Hellenic pʰáos, from Proto-Indo-European bʰéh₂os, from Proto-Indo-European bʰeh₂-.
phototachometry (English): The use of the phototachometer
Definitions
- The use of the phototachometer
Ancestry of “phototachometry”, step by step
phototachometry traces back through two separate lines of ancestry.
via English photo
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | photo | A photograph; A photo finish; To take a... |
| 2 | English | photography | The art and technology of producing images on... |
| 3 | French | photographie | photography; photograph |
| 4 | Ancient Greek | φωτο- | — |
| 5 | Ancient Greek | φῶς | Attic form of φᾰ́ος |
| 6 | Proto-Hellenic | pʰáos | — |
| 7 | Proto-Indo-European | bʰéh₂os | — |
| 8 | Proto-Indo-European | bʰeh₂- | to shine, glow light; to speak, say |
| 9 | Proto-Indo-European | bʰeh₂-s-ri- | — |
via English tachometry
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | tachometry | The use of a tachometer |
| 2 | English | -metry | Forming nouns relating to measures and... |
| 3 | Ancient Greek | μέτρον | something used to measure: measure, rule, weight;... |
| 4 | Ancient Greek | -τρον | Forms instrument nouns |
| 5 | Proto-Hellenic | -tron | Forms instrument nouns from verb stems |
| 6 | Proto-Indo-European | -trom | Forms nouns denoting a tool or instrument |
| 7 | Proto-Indo-European | -tḗr | Derives agent nouns from verbs, denoting someone... |